Continuously-wound single-phase large-size iron core and fabrication method thereof

Abstract

The invention discloses a continuously-wound single-phase large-size iron core and a fabrication method thereof. The continuously-wound single-phase large-size iron core comprises an iron core material strip, wherein the single-phase iron core comprises a multi-layer iron core material strip, the shape of a single-layer material strip is a rectangle-shaped material strip, a window is arranged at a hollow part of the single-phase iron core, an upper yoke is arranged at an upper end of the window of the single-phase iron core, a lower yoke is arranged at a lower end of the window of the single-phase iron core, a central post is arranged between the upper yoke and the lower yoke, the continuously-wound single-phase large-size iron core has structural keys that the single-phase iron core is formed by continuously winding the iron core material strips, each layer of material strip has eight 135-degree bending corners or twelve 150-degree bending corners, and the bending corners are vertically and horizontally symmetric. The single-phase large-size iron core disclosed by the invention has the advantages of low no-load loss and energy saving, and is simple and convenient to operate and produce, a large-size winding tension device is not needed, and an iron core annealing process is not needed.

Description

technical field [0001] In particular, the invention relates to a structural improvement of a continuously wound single-phase iron core and a manufacturing method thereof. Background technique [0002] The shape of traditional single-phase iron cores is mostly square or round. Square and round single-phase iron cores are more inconvenient when assembling iron cores, and because the hollow area of ​​square or round single-phase iron cores is too large, it is easy to It is a waste of energy to increase the no-load loss of a transformer or reactor equipped with such a single-phase iron core. [0003] At present, there are two types of manufacturing methods for the iron core of transformers or reactors: laminated or wound. The laminated iron core has air gaps in this way, and the material strips are not tight enough, and there are local high material heights. The direction of magnetic conduction is inconsistent with the direction of the magnetic circuit, which makes the performa...

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Problems solved by technology

[0002] The shape of traditional single-phase iron cores is mostly square or round. Square and round single-phase iron cores are more inconvenient when assembling iron cores, and because the hollow area of ​​square or round single-phase iron cores is too large, it is easy to It is a waste of energy to increase the no-load loss of a transformer or reactor equipped with such a single-phase iron core

[0003] At present, there are two types of manufacturing methods for the iron core of transformers or reactors: lamination type or winding type. Due to the existence of air gaps in this way, the lamination type iron core is not tight enough between the strips, and there are also local high material heights. The direction of magnetic conduction is inconsistent with the direction of the magnetic circuit, which makes the performance of the iron core poor. The winding type iron core can better overcome the above shortcomings, but the assembly method of the winding type single-phase iron core is more complicated and error-prone, resulting in serious as a result of

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